Teradata Interview Questions and Answers

Designing a high-speed data processing system for a satellite communication project.

• Working with complex algorithms to optimize data transmission

• Collaborating with RF engineers to ensure signal integrity

• Testing and debugging in a simulated space environment

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or objects.

• Examples include method overloading and method overriding in object-oriented programming languages like Java.

OOP principles are the fundamental concepts of object-oriented programming that help in designing and implementing software solutions.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: The ability of objects to take on multiple forms or have multiple behaviors.

• Abstraction: Hid...read more

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Allows a class to reuse code from another class

• Creates a parent-child relationship between classes

• Derived class inherits attributes and methods from base class

3 way matching is a process used in accounting to ensure that the purchase order, invoice, and receiving report all match before payment is made.

• Involves comparing the purchase order with the invoice and the receiving report

• Helps to prevent errors and fraud in the accounts payable process

• Ensures that the company is only paying for goods or services that were actually received

• Example: A company orders 100 units of ...read more

LRU Cache is a data structure that stores recently used items in a limited size cache.

• LRU stands for Least Recently Used

• It has a fixed size and when the cache is full, the least recently used item is removed to make space for new items

• It uses a combination of a doubly linked list and a hash map to achieve O(1) time complexity for both insertion and deletion

• When an item is accessed, it is moved to the front of the ...read more

Various methods to solve spool space issue

• Optimize queries to reduce spool space usage

• Increase spool space allocation for the user

• Use temporary tables to reduce spool space usage

• Use compression techniques to reduce spool space usage

• Avoid Cartesian joins to reduce spool space usage